Abstract
We have investigated dc and ac Josephson effects on YBa2Cu3O7−x ceramic samples using the break junction technique. The critical current was measured as a function of external magnetic field and temperature. The field dependence shows superposition effects of junction and SQUID behavior. The critical current depends linearly on temperature like for SNS junctions. We observed Shapiro steps with microwave radiation with a frequency of 35 GHz at 4.2 K and 77 K, respectively. Deviations of the step height from Bessel behavior at low microwave power are explained within the Stewart-McCumber model using small capacitances of the junction in simulation calculations.
Similar content being viewed by others
References
Kamimura, H., Oshiyama, A. (eds.): Mechanisms of high temperature superconductivity. In: Springer Series in Materials Science. Mooradian, A., Panish, M.B. (eds.), Vol. 11. Berlin Heidelberg, New York, Tokyo: Springer 1989
Zimmermann, J.E., Beall, J.A., Cromar, M.W., Ono, R.H.: Appl. Phys. Lett.51, 617 (1987)
Goldschmidt, D.: Phys. Rev. B39, 9139 (1989)
Moreland, J., Goodrich, L.F., Ekin, J.W., Cabobianco, T.E., Clark, A.F., Braginski, A.I., Panson, A.J.: Appl. Phys. Lett.51, 540 (1987)
Likharev, K.K.: Rev. Mod. Phys.51, 101 (1979)
Barone, A., Paterno, G.: Physics and application of the Josephson effect. New York: Wiley 1982
Stewart, W.C.: Appl. Phys. Lett.12, 277 (1968)
Kuznik, J., Odehnal, M., Seidel P.: J. Low Temp. Phys.72, 391 (1988)
Seidel, P., Köhler, H.-J., Mikolajczak, B., Müller, F., Meyer, H.-G. Phys. Status Solidi A91, K165 (1985)
Yamashita, T., Kawakami, A., Nishihara, T., Takata, M., Kishio, K.: Jpn. J. Appl. Phys.26, L671 (1987)
Niemeyer, J., Kataria, N.D., Dietrich, M.R., Politis, C., Koch, H., Schöllhorn, R., Eickenbusch, H.: Z. Phys. B — Condensed Matter69, 1 (1987)
Häuser, B., Klopman, B.B.G., Gerritsma, G.J., Gao, J., Rogalla, H.: Appl. Phys. Lett.54, 1368 (1989)
Russer, P.: J. Appl. Phys.43, 2008 (1972)
Siegel, M., Heinz, E., Seidel, P., Müller, F.: Proc. ICMC 1990, Garmisch-Partenkirchen, May 9–11, 1990 (in press)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Siegel, M., Heinz, E., Seidel, P. et al. Josephson effect on YBCO break junctions. Z. Physik B - Condensed Matter 83, 323–326 (1991). https://doi.org/10.1007/BF01313400
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01313400